Stability of superfluid vortices in dense quark matter

Mark G. Alford, S. Kumar Mallavarapu, Tanmay Vachaspati, Andreas Windisch

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Superfluid vortices in the color-flavor-locked (CFL) phase of dense quark matter are known to be energetically disfavored relative to well-separated triplets of so-called semi-superfluid color flux tubes. However, the short-range interaction (metastable versus unstable) has not been established. In this paper we perform numerical calculations using the effective theory of the condensate field, mapping the regions in the parameter space of coupling constants where the vortices are metastable versus unstable. For the case of zero-gauge coupling we analytically identify a candidate for the unstable mode and show that it agrees well with the results of the numerical calculations. We find that in the region of the parameter space that seems likely to correspond to real-world CFL quark matter the vortices are unstable, indicating that if such matter exists in neutron star cores it is very likely to contain semi-superfluid color flux tubes rather than superfluid vortices.

Original languageEnglish (US)
Article number045801
JournalPhysical Review C - Nuclear Physics
Volume93
Issue number4
DOIs
StatePublished - Apr 1 2016

Fingerprint

quarks
vortices
color
tubes
neutron stars
condensates
interactions

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Stability of superfluid vortices in dense quark matter. / Alford, Mark G.; Mallavarapu, S. Kumar; Vachaspati, Tanmay; Windisch, Andreas.

In: Physical Review C - Nuclear Physics, Vol. 93, No. 4, 045801, 01.04.2016.

Research output: Contribution to journalArticle

Alford, Mark G. ; Mallavarapu, S. Kumar ; Vachaspati, Tanmay ; Windisch, Andreas. / Stability of superfluid vortices in dense quark matter. In: Physical Review C - Nuclear Physics. 2016 ; Vol. 93, No. 4.
@article{e68c4aee87ab4971ab4a17a3db80ff42,
title = "Stability of superfluid vortices in dense quark matter",
abstract = "Superfluid vortices in the color-flavor-locked (CFL) phase of dense quark matter are known to be energetically disfavored relative to well-separated triplets of so-called semi-superfluid color flux tubes. However, the short-range interaction (metastable versus unstable) has not been established. In this paper we perform numerical calculations using the effective theory of the condensate field, mapping the regions in the parameter space of coupling constants where the vortices are metastable versus unstable. For the case of zero-gauge coupling we analytically identify a candidate for the unstable mode and show that it agrees well with the results of the numerical calculations. We find that in the region of the parameter space that seems likely to correspond to real-world CFL quark matter the vortices are unstable, indicating that if such matter exists in neutron star cores it is very likely to contain semi-superfluid color flux tubes rather than superfluid vortices.",
author = "Alford, {Mark G.} and Mallavarapu, {S. Kumar} and Tanmay Vachaspati and Andreas Windisch",
year = "2016",
month = "4",
day = "1",
doi = "10.1103/PhysRevC.93.045801",
language = "English (US)",
volume = "93",
journal = "Physical Review C - Nuclear Physics",
issn = "0556-2813",
publisher = "American Physical Society",
number = "4",

}

TY - JOUR

T1 - Stability of superfluid vortices in dense quark matter

AU - Alford, Mark G.

AU - Mallavarapu, S. Kumar

AU - Vachaspati, Tanmay

AU - Windisch, Andreas

PY - 2016/4/1

Y1 - 2016/4/1

N2 - Superfluid vortices in the color-flavor-locked (CFL) phase of dense quark matter are known to be energetically disfavored relative to well-separated triplets of so-called semi-superfluid color flux tubes. However, the short-range interaction (metastable versus unstable) has not been established. In this paper we perform numerical calculations using the effective theory of the condensate field, mapping the regions in the parameter space of coupling constants where the vortices are metastable versus unstable. For the case of zero-gauge coupling we analytically identify a candidate for the unstable mode and show that it agrees well with the results of the numerical calculations. We find that in the region of the parameter space that seems likely to correspond to real-world CFL quark matter the vortices are unstable, indicating that if such matter exists in neutron star cores it is very likely to contain semi-superfluid color flux tubes rather than superfluid vortices.

AB - Superfluid vortices in the color-flavor-locked (CFL) phase of dense quark matter are known to be energetically disfavored relative to well-separated triplets of so-called semi-superfluid color flux tubes. However, the short-range interaction (metastable versus unstable) has not been established. In this paper we perform numerical calculations using the effective theory of the condensate field, mapping the regions in the parameter space of coupling constants where the vortices are metastable versus unstable. For the case of zero-gauge coupling we analytically identify a candidate for the unstable mode and show that it agrees well with the results of the numerical calculations. We find that in the region of the parameter space that seems likely to correspond to real-world CFL quark matter the vortices are unstable, indicating that if such matter exists in neutron star cores it is very likely to contain semi-superfluid color flux tubes rather than superfluid vortices.

UR - http://www.scopus.com/inward/record.url?scp=84963640799&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84963640799&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.93.045801

DO - 10.1103/PhysRevC.93.045801

M3 - Article

AN - SCOPUS:84963640799

VL - 93

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

SN - 0556-2813

IS - 4

M1 - 045801

ER -